package com.api.framework.websocket;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import javax.websocket.*;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.concurrent.Semaphore;

/**
 * websocket 消息处理
 *
 * @author ruoyi
 */
@Component
//@ServerEndpoint("/websocket/message")
@ServerEndpoint(value = "/api/chat/{strKey}")
//@ServerEndpoint("/api/chat/{strKey}/")
public class WebSocketServer {
    /**
     * WebSocketServer 日志控制器
     */
    private static final Logger LOGGER = LoggerFactory.getLogger(WebSocketServer.class);
    //    private static Map<String, Session> clients = new ConcurrentHashMap<String, Session>();
    private Session session;
    private String SYS_Key = "sys";
    /**
     * 默认最多允许同时在线人数100
     */
    public static int socketMaxOnlineCount = 100;

    private static Semaphore socketSemaphore = new Semaphore(socketMaxOnlineCount);
    private String GROUP_TITLE = "GROUP_";

    /**
     * 连接建立成功调用的方法
     */
    @OnOpen
    public void onOpen(@PathParam("strKey") String strKey, Session session) throws Exception {
//    public void onOpen(Session session) throws Exception {
//        String strKey = session.getId();
        System.out.println("wsOnOpen");
        session.getBasicRemote().sendText("dsfdsaf");
        boolean semaphoreFlag = false;
        // 尝试获取信号量
        semaphoreFlag = SemaphoreUtils.tryAcquire(socketSemaphore);
        if (!semaphoreFlag) {
            // 未获取到信号量
            LOGGER.error("\n 当前在线人数超过限制数- {}", socketMaxOnlineCount);
//            WebSocketUsers.sendMessageToUserByText(session, "当前在线人数超过限制数：" + socketMaxOnlineCount);
            session.getBasicRemote().sendText("当前在线人数超过限制数：" + socketMaxOnlineCount);
            session.close();
        } else {
            // 添加用户
            WebSocketUsers.put(session.getId(), session);
            WsUser.put(strKey, session);
            LOGGER.info("\n 建立连接 - {}", session);
//            LOGGER.info("\n 当前人数 - {}", WebSocketUsers.getUsers().size());
            LOGGER.info("\n 当前人数 - {}", WsUser.getClients().size());
//            clients.put(strKey, session);
            WebSocketUsers.sendMessageToUserByText(session, "连接成功");
//            WsUser.sendMessageToUserByText(strKey, strKey, "连接成功");
            session.getBasicRemote().sendText("连接成功：");
        }
    }

    /**
     * 连接关闭时处理
     */
    @OnClose
    public void onClose(Session session) {
        LOGGER.info("\n 关闭连接 - {}", session);
        // 移除用户
        WebSocketUsers.remove(session.getId());
        // 获取到信号量则需释放
        SemaphoreUtils.release(socketSemaphore);
    }

    /**
     * 抛出异常时处理
     */
    @OnError
    public void onError(Session session, Throwable exception) throws Exception {
        if (session.isOpen()) {
            // 关闭连接
            session.close();
        }
        String sessionId = session.getId();
        LOGGER.info("\n 连接异常 - {}", sessionId);
        LOGGER.info("\n 异常信息 - {}", exception);
        // 移出用户
        WebSocketUsers.remove(sessionId);
        // 获取到信号量则需释放
        SemaphoreUtils.release(socketSemaphore);
    }

    /**
     * 服务器接收到客户端消息时调用的方法
     */
    @OnMessage
    public void onMessage(String message, Session session) throws IOException {
//        String msg = message.replace("你", "我").replace("吗", "");
//        System.out.println(msg);
//        WebSocketUsers.sendMessageToUserByText(session, msg);
        session.getBasicRemote().sendText("dsfdsaf");
        System.out.println(message);
        MessageMoel messageMoel = new MessageMoel(message);
        String strTo = messageMoel.getTo();
        String keyFrom = messageMoel.getFrom();
        String sendMess = messageMoel.getMessage();
        if (!WsUser.checkSession(keyFrom)) {
            WsUser.put(keyFrom, session);
        }
        WsUser.sendMessageToUserByText(keyFrom, strTo, sendMess);
//        WsUser.returnMessage(session, "请重新登录");
    }
}
